Results 31 to 40 of about 1,107,843 (394)

PLANET-PLANET SCATTERING IN PLANETESIMAL DISKS [PDF]

open access: yesThe Astrophysical Journal, 2009
We study the final architecture of planetary systems that evolve under the combined effects of planet-planet and planetesimal scattering. Using N-body simulations we investigate the dynamics of marginally unstable systems of gas and ice giants both in isolation and when the planets form interior to a planetesimal belt.
Noel Gorelick   +2 more
openaire   +4 more sources

Ontosonographic Maps: Toward a Theoretization of Soundscape Forms in the Anthropocene Epoch

open access: yesEtnoantropološki Problemi, 2021
This paper deals with the ways in which it is possible to conceptualize and map forms of soundscape in the epoch of the Anthropocene. After humans became a geological force, which is a role that used to be reserved for the planet itself, one can pose the
Andrija Filipović
doaj   +1 more source

Evolution of Giant Planets in Eccentric Disks [PDF]

open access: yes, 2006
We investigate the interaction between a giant planet and a viscous circumstellar disk by means of high-resolution, two-dimensional hydrodynamical simulations.
Gennaro D’Angelo   +9 more
core   +4 more sources

Validação da Aplicação de Imagens Planet à Regularização Ambiental de Imóveis Rurais no Mato Grosso do Sul [PDF]

open access: yesAnuário do Instituto de Geociências, 2019
As legislações e normas ambientais direcionadas à preservação e monitoramento da utilização dos recursos naturais tem sido combustível para uma gama de pesquisas nas áreas das ciências ambientais.
Évelyn Camila Casadias Pinheiro   +2 more
doaj   +1 more source

PLANETS ON THE EDGE [PDF]

open access: yesThe Astrophysical Journal, 2014
Hot Jupiters formed through circularization of high-eccentricity orbits should be found at orbital separations $a$ exceeding $twice$ that of their Roche limit $a_{\rm R}$. Nevertheless, about a dozen giant planets have now been found well within this limit ($a_{\rm R}
Francesca Valsecchi, Frederic A. Rasio
openaire   +3 more sources

Puzzling out the coexistence of terrestrial planets and giant exoplanets. The 2/1 resonant periodic orbits [PDF]

open access: yes, 2018
Hundreds of giant planets have been discovered so far and the quest of exo-Earths in giant planet systems has become intriguing. In this work, we aim to address the question of the possible long-term coexistence of a terrestrial companion on an orbit ...
Antoniadou, Kyriaki I.   +1 more
core   +2 more sources

Sculpting the valley in the radius distribution of small exoplanets as a by-product of planet formation: the core-powered mass-loss mechanism. [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Recent observations revealed a bimodal radius distribution of small, short-period exoplanets with a paucity in their occurrence, a radius 'valley', around 1.5-2.0 R⊕.
Akash Gupta, H. Schlichting
semanticscholar   +1 more source

A Hyper-Textual Interpretation of the Seven Planets` Motif Design in Seljuk Art (Case study «Enamel bowl» and book of «Aja'ib al-Makhluqat» by Zakariya al-Qazwini) [PDF]

open access: yesپیکره
Introduction:The Seljuk era, was a prosperous time in case of dealing with art; during this time art reached to higher level, as numerous and diverse artworks with cosmological concepts were created, which represents the significance of cosmology in this
Alireza Azizi Yousefkand   +3 more
doaj   +1 more source

A New Planet Around an M Dwarf: Revealing a Correlation Between Exoplanets and Stellar Mass [PDF]

open access: yes, 2007
We report precise Doppler measurements of GJ317 (M3.5V) that reveal the presence of a planet with a minimum mass Msini = 1.2 Mjup in an eccentric, 692.9 day orbit. GJ317 is only the third M dwarf with a Doppler-detected Jovian planet.
Debra A. Fischer   +11 more
core   +2 more sources

A seven-planet resonant chain in TRAPPIST-1 [PDF]

open access: yesNature Astronomy, 2017
The TRAPPIST-1 system is the first transiting planet system found orbiting an ultracool dwarf star1. At least seven planets similar in radius to Earth were previously found to transit this host star2.
R. Luger   +32 more
semanticscholar   +1 more source

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